/* 全局字体和基础样式 */
body {
    font-family: 'Roboto', 'Arial', sans-serif;
    margin: 0;
    padding: 0;
    line-height: 1.8;
    background: linear-gradient(to bottom, #f3f4f6, #e5e7eb);
}
body {
    font-size: 15px;
    background-color: #f9fafb;
}

.navbar-nav .nav-link {
    font-size: 14px;
}

input, button, select {
    font-size: 14px;
    border-radius: 6px;
}

a {
    text-decoration: none;
    color: inherit;
    transition: color 0.3s ease;
}

a:hover {
    color: #2563eb;
}

.container, .container-fluid {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 15px;
}

table {
    border-collapse: collapse;
    width: 100%;
}

th, td {
    text-align: left;
    padding: 12px;
}

.border-b {
    border-bottom: 1px solid #e5e7eb;
}

h1, h2, h3, h4, h5, h6 {
    font-weight: 600;
    color: #1e1d1d;
}

button, input, select, textarea {
    font-family: inherit;
    transition: all 0.3s ease;
}